Clip for developing-trays.



P. W. QUIDAS. CLIP FOR DEVELOPING TRAYS. APPLICATION FILED MAY 23, 1913.

1,125,092. Patented Jan. 19, 1915.

F401 Pg. 2 Pg. 3

THE nus 'e. 5 PETERS ca. WAiHIHCTON, n. c

FREDERICK W. QUIDAS, OF BROOKLYN, NEW YORK.

CLIP FOR DEVELOPING-TRAYS.

Specification of Letters Patent.

Patented Jan. 19, 1915.

Application filed May 23, 1913. Serial No. 769,516.

To all whom it may concern:

Be it known that I, FREDERICK W. QUIDAs, a citizen of the United States,residing at Brooklyn, in the county of Kings and State of New York, haveinvented new and useful Improvements in Clips for Developing- Trays, ofwhich the following 1s a specification.

My invention relates to developing trays in which a clip is used for aholding device for plates or films while being developed.

The object of my invention is to produce a simple device in the form ofa clip which can be manufactured cheaply and at the same time be easy toattach and detach from the developing tray.

A further object is that it can be adapted to trays for holding smallphotographic dry plates, and such narrow and long plates as are used forstereoscopic purposes.

A further object is that it enables one to use a plurality of such clipsor arms for tWo or more plates at a time, the number of such clips orarms being in proportion to the number of plates being developed.

A still further object is to produce a plate holding device which doesnot need to be attached to the inside of the tray on which said clip canbe used.

Referring to the drawings: Figure 1, shows a cross-section view of thetray with the clip in position. Fig. 2, a cross-section view of trayhaving a modification of the clip shown in Fig. 1. Fig. 3, a top planView of the tray, utilizing said clip. Fig. 4, a side view of the clip.Fig. 5, a perspective view of Fig. 4. Fig. 6, a modification of clip.Fig. 7, a perspective view of Fig. 6.

By referring to the drawings, in which like reference charactersdesignate corresponding parts, the tray 15 can be made of anytransparent substance, preferably glass, so that progress of thedevelopment of the plates placed therein can be watched without removingthem from the tray until fully developed.

At the one end of the tray is formed a partial top 9 which acts as areservoir, so that when the tray is stood upright for the inspection ofplate or film during development, the solution will not run out.

As shown in Fig. 3 of the drawings, two or more clips can be used fordeveloping two or more plates 11, as well as one clip for developing oneplate.

At the upper end of the tray, Figs. 1 and 2, adetent 12 is formed. At 13an offset with finger depression 14, Fig. 3, is formed for facilitatingthe removal.

As shown in Fig. A, 3 is a curved end adapted to engage in the recess 1,Fig. 1, while the upper curved portion 6 of the clip engages over theopen end 10 of the partial top 9 of the tray.

Between 3 and 6 the clip is bowed or curved as shown at 4, so that whenthe clip is pressed against the partial top 9, the bowed portion A isflattened out, thus allowing the curved portions 3 and 6 to engage therespective points 1 and 6, Fig. 1, which will make the clip secure bythe contracting spring action of the bowed portion 1. 4 shows the bowedportion flattened against the partial top, shown in dotted lines, andrepresenting the corresponding portion of the partial top as shown inFig. 1. At 8 is a hooked point which serves the purpose of holding theplate at that particular place, while the plate is being made secure inthe tray by the action of the spring arm forcing and holding the plateup in the detent 12. The reference numbers correspond to those in Fig.1.

Figs. 6 and 7 show a modified form of clip which performs a differentfunction in securing itself to the tray, although it is the same inprinciple. The recess 2, Fig. 2, is made longer to accommodate themodified form of clip. The formation of this recess 2, Fig. 2, is thesame as the recess 1, Fig. 1, except for length to accommodate thelonger spring extension 5 of the clip. In other respects theconstruction is identical with the form shown in Figs. 4 and 5, thepoints 6, (Fig. 6) and points 7 (Fig. 7 are used for the same purpose;also, the hooked point 8 performs the same function. To fasten thismodified form of clip to the tray, it is only necessary to place thepoint 5, Figs. 6 and 7, in the recess 2, Fig. 2, and force the otherextremity or arm of clip over the point 10 of the partial top 9, Fig. 2,so that the curved portion 6 engages said point 10, when the action ofthe spring 5 will tend to produce a. clamping action between the recess2 and point 10.

In developing plates, the clip being in position, the plate is placed atthe hooked point 8, at the extremity of the arm of the clip, the plate11 being pressed downward causes said arm to bend suficiently to allowgripping of the plate for the upper end of the plate to engage in thedetent 12 placed or formed at the upper end of the tray, the springaction of the arm of the clip causing the plate to be held rigidly insaid detent 12.

To remove the plate 11, the reverse action takes place; 2'. 6., byplacing the finger in the depression 14, then pressing the platedownward, the arm of the clip yields correspondingly until the upper endof plate is free or disengages from under the detent 12, after which theplate is easily removed.

I do not Wish to be understood as limiting myself to the details ofconstruction and ari rangement as herein described, as variations andmodifications can be made in the features of construction andarrangements in the adaptation of the device to various conditions ofuse Without departing from the spirit and scope of my invention.

I claim:

A developing tray having a partial overhanging top, and a spring clampformed to span and engage said top and having a depending spring armadapted to engage one end of a photographic plate and hold the same withits opposite end in engagement with the opposite end of said tray.

7 FREDERICK W. QUIDAS.

Witnesses:

GURMAR C. ENGSTRAND, FRANK NICH LS.

Copies of this patent may be obtained for five cents each, by.addressing: the Cemmissi oner of Eaten,

Washington D. C,

